Hollow Core Slabs for Lubrication Garage Floor

[ajk1]

Has anyone used hollow core slabs with cast-in-place topping for a lubrication garage suspended floor with basement below? This would be the type of garage with several bays where you drive in for oil change etc., and then drive out.

The topping would be about 4" thick.

How would the floor be made so that the corrosive water with deicing chemicals tracked in during winter, did not leak thru the floor and cause corrosion of the bottom steel in the precast?

How was the topping treated above the longitudinal joints in between precast hollow core units?

Did you put a waterproofing membrane on the floor as per CSA Standard S413 "Parking Structures"?

I have been asked to review such a design.

 

[allgoodnamestaken]

It may be that I'm in the wrong here, but the word membrane is right in the subheading on that page, and the elastomeric compound applied is by definition a membrane.

It's ok though, it may not apply to your project. Not worth fighting over.